JPS6229097B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a kitchen waste processing apparatus that crushes kitchen waste discharged from a kitchen or a dining room using a crusher and sends the crushed waste along with water to a dehydrator for dehydration treatment.

In large buildings, it is necessary to transport kitchen waste from the dining room to a garbage storage area located a considerable distance vertically or horizontally, and transporting the waste in buckets or the like on trolleys takes time and effort. Instead, there are problems such as the release of bad odors into elevators and aisles along the way, so kitchen waste disposal equipment such as the one shown in FIG. 1 has come to be used for disposal. In the apparatus shown in FIG. 1, a crusher 1 is installed in a corner of a kitchen or a dining room, and kitchen waste A is fed into the crusher 1 while water is supplied, and the crushed kitchen waste is pumped out together with water by a pump P. ₁ , the waste is sent through a feed pipe 2 to a dehydrator 3 installed near a garbage storage area, where it is dehydrated, and the dehydrated kitchen waste is discharged from an outlet 4, which is then received in a container 5 and disposed of. I'm starting to do it. Since this type of device consumes a lot of water, a tank 6 is provided to store the water discharged from the dehydrator 3, as shown in FIG. The water is circulated by being returned to the crusher ₁ via the return pipe 7 by the water supply pump P2, thereby reducing water consumption. In Fig. 1, 8 and 9 are motor valves that are opened and closed when this equipment is started and stopped, and 10 and 11 are motor valves that are used to adjust the water levels to a predetermined height when the water levels in the crusher 1 and tank 6 are low. Water supply valve for raising the water up to 1
2 and 13 are overflow pipes.

As mentioned above, this device installs the crusher 1 near the place where kitchen waste is generated, such as in the kitchen, and the dehydrator 3 near the place where kitchen waste is disposed of, such as a garbage storage area, so that the distance between the two can be reduced. Kitchen waste can be easily disposed of even if the dehydrator 3 is far away, and water consumption can be relatively small by reusing the water discharged from the dehydrator 3. However, with this method of reusing water, small kitchen waste that cannot be captured by the dehydrator 3 may be mixed in or dissolved in the reused water, so it is necessary to stop the equipment, especially in the summer. If the crusher is operated after being left overnight, the water in the tank 6 and return pipe 7 will rot and emit a foul odor when supplied to the crusher 1.
The kitchen significantly impairs the environment in the cafeteria and other areas, resulting in unsanitary conditions. Although the water in this device can be extracted from the crusher 1, dehydrator 3, and tank 6, it is impossible to completely extract it from the feed pipe 2 and return pipe 7, and the water inside both pipes 2 and 7 cannot be completely removed. The water can be made closer to cleaner water by opening the water supply valves 10 and/or 11 and supplying clean water without adding kitchen waste, while operating the pumps P ₁ and P ₂ to circulate the water. Operation for this purpose deviates from the original operation for processing kitchen waste, resulting in so-called wasteful operation, and at the same time has the disadvantage of increasing water consumption. Furthermore, even if the water in the pipes is cleaned to some extent, due to the rotten matter adhering to the inner surface of the pipes,
The rotten smell transfers to the water that passes through it, and the occurrence of bad odors is unavoidable. In addition, in this device, the entire amount of water for sending the crushed kitchen waste to the dehydrator 3 is sent to the crusher 1, but the water level in the crusher 1 tends to fluctuate depending on the type of kitchen waste that is input. If a large amount of water is supplied here, there is a drawback that the water level fluctuates rapidly and accurate control cannot be performed, and unprocessed kitchen waste may overflow. Furthermore, this device
If a large amount of kitchen waste, which is easily crushed by the crusher 1, or kitchen waste, which has a small particle size and easily passes through the crusher 1, such as cooked rice, is fed into the crusher 1 at once, there is a drawback that the pipes become clogged.

The present invention solves the above-mentioned drawbacks, consumes relatively little water, does not spread bad odors into the kitchen, etc., and furthermore, the water level in the crusher can be easily controlled, and accurate crushing is possible. To provide a kitchen waste processing device that does not cause clogging in piping.

FIG. 2, which shows one embodiment of the present invention, will be described below. In this device, the same parts as in the conventional device shown in FIG. 1 are denoted by the same reference numerals, and a detailed explanation of the structure will be omitted. This device consists of tank 6 and dehydrator 3.
In between, a circulation circuit consisting of a circulation pump P, a return pipe 20, a mixer 21 to be described later, and a feed pipe 22 is constructed, and the water in the tank 6 is not sent to the crusher 1 but is sent to the dehydrator 3 via the mixer 21. It's starting to go back to .
The outflow port 1a of the crusher 1 is connected to a discharge pipe 24 and a valve 23 connected therebetween by a kitchen waste delivery pump P such as a roots pump or a hose pump, which can send even highly viscous slurry containing solids.
_V to the mixer 21, which mixer 2
1, the kitchen waste discharged from the crusher 1 is made to join the feed pipe 22.

Next, the operation of this device will be explained. first,
While opening the water supply valve 11 and valve 23 and operating the circulation pump P, water fills the return pipe 20, mixer 21, and feed pipe 22, and the tank 6
The operation continues without putting kitchen waste into the crusher 1 until the water level reaches a certain value. In this way, when the water level in the tank 6 reaches the above-mentioned constant value, the water supply valve 11 is closed, the other water supply valve 10 is opened, and the crusher 1, dehydrator 3 and kitchen waste delivery pump P
Operate _V and feed kitchen waste A into crusher 1. The kitchen waste crushed by the crusher 1 is sent to the mixer 21 by the kitchen waste delivery pump P _V together with water supplied from the water supply valve 10, and is sent from the return pipe 20 to the feed pipe 22.
The water is combined with the circulating flow flowing toward the water and transported to the dehydrator 3, where it is dehydrated in the same manner as in the case shown in FIG.

Here, the pressure at which the crushed kitchen waste is delivered by the kitchen waste delivery pump P _V is set higher than the pressure inside the circulating flow mixer 21, and the circulating flow flows from the mixer 21 to the kitchen waste delivery pump P _V side (hereinafter referred to as backflow). ) must be avoided. For this reason, the kitchen waste delivery pump P
For _V , there are so-called sludge pumps such as roots pumps and hose pumps that can reliably deliver the waste, vane pumps since kitchen waste is relatively soft, and volumetric pumps that generate high pressure such as piston type pumps that provide intermittent delivery. It is preferable to use a pump that can
In addition, if the proportion of the flow rate added from the kitchen waste delivery pump P _V side to the circulation flow is large, the circulation pump P will be overloaded, but the kitchen waste delivery pump P _V
Since the distance is short, it is possible to send the crushed kitchen waste from the crusher 1 to the mixer 21 by adding a small amount of water, and since the concentration of the crushed kitchen waste can be increased, the ratio can be kept relatively low. However, the concentration of kitchen waste in the feed pipe 22 can be reduced to 5 to 10%, which is normally done.
(volume %), and there are no transportation problems.

After the crushing process is completed, by supplying only water from the water supply valve 10 to the crusher 1, the inside of the crusher 1 can be cleaned, and the discharge pipe 24, the garbage delivery pump P _V and the mixer 21 can also be cleaned. be able to. Note that the inner surface between the crusher 1 and the mixer 21 will still have some dirt attached to it even after washing with water, which will cause a bad odor, but this bad odor will stop when the work is finished. Afterwards, this can be prevented by closing the valve 23, collecting some water in the crusher 1, and sealing it.

In the embodiment described above, the kitchen waste sent out from the crusher 1 and the circulating flow of water by the circulation pump P were combined in the mixer 21, but
If the amount of kitchen waste to be delivered is small, a Y-shaped joint may be used instead of a special mixer.
In addition, if the return piping 20 and the feed piping 22 are higher than the crusher 1 and the dehydrator 3, when the circulation pump P and the kitchen waste delivery pump P _V are stopped, the crusher 1 and the dehydrator 22 are Needless to say, it is necessary to provide a check valve or a manual or automatic opening/closing valve to prevent water from flowing back into the machine 3.

As described above, according to the present invention, the water discharged from the dehydrator and reused is not returned to the crusher, but flows through the circulation circuit that is sealed except for the dehydrator, and is sent to the crusher. Because there is no backflow,
The kitchen where the shredding machine is installed will not emit bad odors into the cafeteria. In addition, the crusher is not supplied with the large amount of water required to send the crushed kitchen waste to the dehydrator, but only the small amount of water required to send the crushed kitchen waste to the circulation circuit with the help of the kitchen waste delivery pump. Since it is only necessary to supply water, the water level inside the crusher can be easily controlled even in a small crusher without using a complicated control circuit that requires expensive motor valves and delicate control. Furthermore, since the kitchen waste delivery pump has a fixed-quantity feed performance, even when a large amount of kitchen waste is fed into the crusher at once, the crushed kitchen waste is pushed out into the circulating flow while being restricted, and inside the feed pipe. The concentration of kitchen waste will not rise abnormally and cause clogging of pipes.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing a conventional kitchen waste processing apparatus, and FIG. 2 is a system diagram showing an embodiment of the present invention. 1... Crusher, 2, 22... Feed piping, 3...
Dehydrator, 4... Outlet, 5... Container, 6...
Tank, 7, 20... Return piping, 8, 9... Motor valve, 10, 11... Water supply valve, 12, 1
3... Overflow piping, 21... Mixer, 23
... Valve, 24 ... Discharge pipe, P ₁ ... Delivery pump, P ₂ ... Water supply pump, P ... Circulation pump, P _V
...Kitchen waste delivery pump.

Claims (1)

[Claims] 1 In a kitchen waste processing device that crushes kitchen waste in a crusher and sends it together with water to a dehydrator for dehydration treatment, and reuses the water discharged from the dehydrator to send out the crushed kitchen waste, A circulation circuit is provided between the tank for storing discharged water and the dehydrator, and the water is resupplied from the tank to the dehydrator, and the outlet of the crusher is connected to the circulation circuit via a metered feed pump for kitchen waste. A kitchen waste processing device characterized by being connected.